Ok, so I used Alcohol 120% to burn Echelon's game (because I only have the downloadable content for the European version).

Dreamcast games are compressed on the disc, and Skies is a mighty game at that. It'll fit on your CD-R though.

If you have the USA version of disc 2, you'll need to burn echelon's CD2 as well, as his is European.

Just be warned, Echelon's game is decompressed on the fly, which makes it very buggy and choppy. I eventually just went back to my original without the content because it was easier to play._________________